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    3 Amp Fuses

    3a fuses (sometimes written as 3-amp fuses) are common components in many types of household and workplace plugs and other electrical devices, both in the UK and elsewhere.

    What are 3a fuses commonly used for?

    3a fuses, specifically, are most often associated with the sorts of household plugs used to supply power to smaller and less powerful appliances around the home and office.

    In the UK, household plugs are often fitted either with a 3a fuse (if they supply a device or appliance that's relatively low-powered), or a 13a fuse (for more power-hungry equipment and larger machinery)

    The general rule of thumb states that fuses will typically be rated according to the approximate power rating of the appliance they're protecting - this is why it's important to always check you're replacing a fuse with an equally rated one (assuming the one that just blew was in fact correctly rated for the device in question!)

    Broadly speaking, the familiar type of red 3a fuses we've all seen in many household plugs and devices are usually advised for supplying appliances that draw up to around 700 watts from the wall - this might include equipment such as:

    • Standard lamps, occasional lighting and other standalone illumination fixtures and fittings
    • Smaller (older) or more efficient (larger, modern) TVs, DVD players, and other relatively low-draw entertainment devices
    • Smaller and less power-hungry kitchen appliances, e.g. fridges, freezers and blenders (as opposed to much higher-powered devices like kettles and toasters)
    • Various mid-range tools and workshop appliances, including soldering irons, handheld drills, jig saws and more
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